Have you wondered why there’s a dove or a rose or a tree on someone’s gravestone? You can answer that question using Glosary of Victorian Cemetery Symbolism.

For example,

Crocus – youthful gladness
Cypress tree – designates hope
Daffodil – death of youth, desire, art, grace, beauty, deep regard.

About the category, I don’t have a “Death” category. So “life in general” it must be.